Cummins ISB 6.7L, ISL SCR Outlet Catalyst Module 2011-2016: OEM 4354248

Support Reliable Exhaust Treatment with an SCR Outlet Catalyst Module for Cummins ISB 6.7L & ISL Engines

What is it?
The Cummins ISB 6.7L and ISL SCR outlet catalyst module, identified by OEM 4354248, is an emissions aftertreatment component designed for Cummins ISB 6.7L and ISL engines produced between 2011 and 2016. Located at the outlet side of the Selective Catalytic Reduction (SCR) system, this module helps reduce nitrogen oxide (NOx) emissions as part of the final stages of the exhaust treatment process before gases are released from the vehicle.

Why choose this SCR Outlet Catalyst Module?
Effective emissions control depends on properly functioning aftertreatment components working together throughout the exhaust system. This SCR outlet catalyst module is manufactured to match Cummins ISB 6.7L and ISL specifications, ensuring compatibility with factory-installed DEF dosing systems, sensors, and catalyst assemblies. Over time, catalyst materials can become less effective due to contamination, thermal stress, and exhaust particulate exposure. Replacing the module with the correct OEM-matched component helps maintain efficient emissions processing and dependable aftertreatment performance.

Key Benefits
✅ Designed for Cummins ISB 6.7L and ISL engines (2011–2016)
✅ Supports NOx reduction within the SCR system
✅ Helps maintain stable aftertreatment system operation
✅ Direct-fit replacement for proper installation
✅ Built for long-term durability in high-temperature exhaust environments

Applications
This SCR outlet catalyst module is used on medium-duty trucks, heavy-duty trucks, buses, and commercial vehicles equipped with Cummins ISB 6.7L and ISL engines from 2011 through 2016. Common applications include delivery trucks, regional freight vehicles, transit buses, vocational equipment, and fleet-operated vehicles where dependable emissions control is required.

Installation Notes
Before installation, allow the exhaust and aftertreatment system to cool completely. Remove the existing catalyst module and inspect surrounding DEF components, sensors, clamps, and exhaust connections for wear, buildup, or damage. Install the replacement module using the proper mounting hardware and sealing components to ensure correct alignment and leak-free operation. After installation, verify proper aftertreatment performance and clear any stored fault codes using diagnostic equipment.

Final Thoughts
If your Cummins ISB 6.7L or ISL-powered vehicle is experiencing emissions warnings, reduced SCR efficiency, or inconsistent aftertreatment performance, replacing the SCR outlet catalyst module with the correct OEM component can help maintain proper exhaust treatment. The Cummins ISB 6.7L / ISL SCR outlet catalyst module (OEM 4354248) plays an important role in supporting dependable emissions control and reliable vehicle operation.